Where does “Norðurírland” come from?
Norðurírland (Faroese) comes from Faroese Írland, from Old Norse Írland, from Old Norse Írar, from Old Irish Ériu, from Primitive Irish *Īweriū, from Proto-Celtic Φīweryū, from Proto-Indo-European piHweryon-, from Proto-Indo-European peyH- — fat, milk.
Ancestry of “Norðurírland”, step by step